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wire 2026-06-01
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$ the-wire · showcase

UNDICI RESTORES MOCK API COMPATIBILITY

By RepoJournal · Filed · About Node.js · Composed from the cited sources · methodology

youcefzemmar avivkeller
2 people shipped this
youcefzemmar @youcefzemmar 1 cited avivkeller @avivkeller 1 cited

Undici 8.2.0 broke the documented single-argument form of MockCallHistory filter methods. A fix just landed to restore backward compatibility without touching the new AND/OR semantics.

The mock utilities in undici [1] took a refactoring in 8.2.0 that inadvertently forced callers to pass a second `logs` argument to `filterCallsByX()` methods, breaking code that relied on the documented API. The fix restores the single-argument form by defaulting `logs` to `this.logs` in the helper [2], while keeping the internal AND/OR filter logic from the recent overhaul intact. This is the kind of regression that hits users running fresh installs against older documentation. If you upgraded to 8.2.0 and hit errors calling `filterCalls`, this patch gets you unblocked. The nodejs.org site is prepping a pride flag update to land around June 1st [3], and reliability is logging the first 2026 report for the books [4].

$ ls nodejs/reviews/ # the step-back reads

the week in review commit-stream 3.0.0 restricts imports to package root the month in review Node 26 enters LTS as five undici advisories land
Full archive → Weekly reviews →

Quick answers

What shipped in Node.js on June 1, 2026?
Undici 8.2.0 broke the documented single-argument form of MockCallHistory filter methods. A fix just landed to restore backward compatibility without touching the new AND/OR semantics. In total, 3 commits and 2 pull requests landed.
Who contributed to Node.js on June 1, 2026?
2 developers shipped this update, including youcefzemmar and avivkeller.
What were the notable Node.js updates?
fix(mock): restore single-arg MockCallHistory.filterCallsByX, fix(mock): restore single-arg MockCallHistory.filterCallsByX (#5328), and chore: pride flag.
♥

$ log @nodejs --recent

Workers preload streams into the startup snapshot; http2 accepts repeated content-encoding 18 shipped HTTP drain stalls after coalesced chunks, undici restores h2 error codes 20 shipped Stale OpenSSL errors cleared, npm 12.2.2 lands in node 26 shipped Node coalesces duplicate DNS lookups, batches HTTP body spans 37 shipped

$ log --all # elsewhere on the wire

Agent Security Quiet day in agent security as guard coverage reaches four clients Alignment & Post-training verl defaults Ascend RL mode, open-instruct unblocks SFT packing

$ ls showcases/

Safety Evals AI Red Teaming Agent Security Interpretability Alignment & Post-training

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